[freetds] FreeTDS and php_pdo
Robin at ndigital.com
Fri Jul 4 13:58:59 EDT 2008
Just wanted to send an email to summarize the "fun" I had trying to get FreeTDS/UnixODBC working with PHP5 and PDO. I realize that this may not apply to all and is somewhat OT for this list, but I'll summarize what I was trying to do and where I had the problems in the interest of it being posted somewhere. I fully understand that most of the issues I am having are NOT the responsibility of the FreeTDS community, but they are related to the concept of getting all this "open source stuff" working together :)
We are trying to standardize our Linux on SUSE Linux Enterprise Server (SLES10). We are currently using MS-SQL2000 as our database backend.
First, SLES's standard PHP install does not include the php5-mssql module and it also does not include FreeTDS (grrr), so I can't use their distributed versions of PHP. So, I ended up getting RPMs from here:
and was able to install PHP5, FreeTDS 0.64-5.1 and UnixODBC integration that way.
Interesting Note: I submitted a bug in Novell's BugZilla about this and got a reply from Matthias Eckermann (Senior Product Manager for SUSE Linux Enterprise Server) stating:
> FreeTDS and better integration with various database backends is
> on our evaluation list for SUSE Linux Enterprise 11.
> Yet, we are currently not planning to support FreeTSD in the
> SUSE Linux Enterprise 10 products family.
> As we are not tracking enhancements in bugzilla, you will see this
> bugzilla entry beeing closed as "FEATURE"."
Anyway, so I got this all working fine (using the "traditional" PHP mssql functions to query MSSQL tables over FreeTDS/UnixODBC) , but then we decided we wanted to standardize our PHP development on the Zend Framework. Zend uses the php PDO module for database connectivity.
While PDO was available as an rpm, I could not find the driver needed to enable PDO to connect to MSSQL. (apparently it can be done one of two or three ways: PDO_DBLIB, PDO_ODBC, and PDO_MSSQL). I could not find PDO_MSSQL for Linux anywhere; didn't like the PDO_ODBC route; so went with the most often recommended PDO_DBLIB. However, as already mentioned, I could not find a PDO_DBLIB rpm anywhere.
A little more hunting and I found that you can also install PHP modules with PECL (the PHP Extension Community Library). So proceeded to try and install PDO_DBLIB that way. I first had to remove the PDO rpm and instead install PDO through PECL, which went well, but I could not get PDO_DBLIB to install through PECL.
I think (but I am no developer guru) that this is a bug somewhere that does a case sensitive check for the presence of "pdo", which it does not find (even though "PDO" is installed - grrr). So, then I downloaded the PDO_DBLIB extension source and tried to compile it manually:
You have to "phpize" the extension; then run "./configure"; then run "make", then copy the .so out of the modules folder to the correct folder (/usr/lib/php5/extensions/ on SLES); then load the module in the php.ini file.
However, when I ran ./configure, it would error out reporting that it could not find "tds.h" in any standard locations, thus FreeTDS must not be install. I hunted around some more and found a posting by Freddy explaining how to create a "fake" tds.h and libtds.a to fool PHP into believing FreeTDS was installed. My paths were different on SLES:
but this seemed to fix it. What surprised me was, this was a fix for 0.82, but my rpm is 0.64-5.1 (there is no 0.82 rpm on the OpenSUSE build server yet). Is this fix still the correct one for 0.64?
So its all up and running now, but it was a bit of an ordeal.
Sorry for the really long email, I just wanted to document it somewhere public, and a few of the problems were related to FreeTDS integration (although blame-able on non-FreeTDS projects).
Thanks for listening. Any comments on what I ended up doing would be appreciated.
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